1.A computer is an electronic device for performing
logical and mathematical operations based on its programs. In other way, a
computer is an electronic device that can accept data and instructions, process
them or store them for later retrieval, and sometimes generate output based on
the processing. The term includes not only the obvious electronic devices that
have a screen, keyboard, printer, and so on, but also computers that are
embedded into devices like those at supermarket checkout counters or in a simple
calculator.
2. The computer basically works as per the
above system where the raw information is given as input through the input
devices. That information is processed based on the logical and mathematical
instructions feed previously inside the central processing unit of the
computer. While the processing is going on, the main processing unit preserves
the information as well as the necessary logic and formulas inside its
permanent and temporary storage devices. After the processing is done the processed
data are displayed or shown by the means of output devices.
